Man charged after double caravan park murder

Forensic investigators are scouring a Queensland caravan park for evidence after a 64-year-old man was charged with the "gruesome" murders of his two neighbours.

The man was charged with two counts of murder a day after two people, believed to be in a relationship, were attacked at the Calliope Caravan Park, south of Gladstone, about 5pm Thursday.

The 60-year-old woman was found dead inside a caravan at the Stowe Road complex, while her 64-year-old partner was found slumped outside with serious head injuries and died later in hospital.

Police have tapped off the caravan park. (Supplied)Detectives have charged a 64-year-old man. (Supplied9NEWS)

Another 64-year-old man, also a long-term resident of the caravan park, was found sitting in a nearby park just after midnight on Friday and was taken into custody.

Police spent the night speaking to witnesses at the caravan park.

They are understood to have seized a bloodied tomahawk from bushland near the deceased woman's caravan that is believed to be the murder weapon.

A man has been charged over a suspected double murder at the Calliope Caravan Park, south of Gladstone, in Queensland. (9NEWS)A man, 63, and a woman, 60, were found at the caravan park with significant injuries and have both died as a result of a suspicious incident. (9NEWS)

"Both scenes were quite horrific for police and emergency services," Detective Inspector Darrin Shadlow told reporters.
He described the scene as "gruesome" and said people who lived in the caravan park were shocked by the event.
"We believe someone would have seen something, heard something which may assist police with their investigations," he said.

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“Our investigations to date indicate that the incidents may have occurred sometime between 3.30 and 4.40pm on Thursday.

“We are appealing for anyone who may have noticed or heard something or seen anyone suspicious, or something out of the ordinary, to contact us.”

A man who said he was a good friend of the male victim came across his body and described his injuries as horrific.

Police and detectives last night interviewed residents at the caravan park as part of a full-scale homicide investigation. (9NEWS)Police have set up a crime scene at the caravan park as they work to determine the circumstances that led to the deaths. (9NEWS)

"He was slumped over his veranda, the blood was everywhere - splattered everywhere," he told 9News.

(9NEWS)A man, who claimed to have been a friend of the male victim, said he came across his body covered in blood and hanging over his veranda. (Facebook/Calliope Caravan Park)It is understood the two victims may have been in a de facto relationship and were long-term residents of the caravan park. (Google)

Anyone with information about this incident should contact Policelink on 131 444 or Crime Stoppers on 1800 333 000.